DOCA0256EN-00

Under Power Protection

The table lists the under power protection data for the PROFIBUS DP communication.

Slot Index

Byte offset

Size (in bytes)

RW

X

Unit

Type

Range

Default value

Svd

Parameter name

1 6

92

2

RW

1

UINT16

  • 0: Disable

  • 1: Alarm
  • 2: Trip
  • 3: Alarm and Trip

0

Y

Function setting

1 6

94

2

RW

1

%P

UINT16

20–1000
(step 1)

60

Y

Pickup

%P = % of nominal power.

The nominal power (Pn) is calculated by the LTMT main unit from the system settings: Pn = VT primary * Full load current.

In case of two-speed motor starters, the nominal power is:

  • Pn1 = VT primary * Full load current, when the motor runs in speed 1 or low speed

  • Pn2 = VT primary * Speed 2 Full load current, when the motor runs in speed 2 or high speed

*

1 6

96

2

RW

0.1

s

UINT16

1–60000
(step 1)

1

Y

Time delay

1 6

98

2

RW

1

%P

UINT16

20–1000
(step 1)

60

Y

Alarm level

%P = % of nominal power.

The nominal power (Pn) is calculated by the LTMT main unit from the system settings: Pn = VT primary * Full load current.

In case of two-speed motor starters, the nominal power is:

  • Pn1 = VT primary * Full load current, when the motor runs in speed 1 or low speed

  • Pn2 = VT primary * Speed 2 Full load current, when the motor runs in speed 2 or high speed

*

1 6

100

2

RW

1

BITMAP

  • Bit 0: Reset key

  • Bit 1: DI

  • Bit 2: Communication

  • Bit 3: Auto

3

Y

Reset mode

1 6

102

2

RW

0.1

s

UINT16

0–60000
(step 1)

0

Y

Auto-Reset delay

1 6

104

2

Reserved

QR Code is a registered trademark of DENSO WAVE INCORPORATED in Japan and other countries.

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